{"id":7413,"date":"2019-08-26T14:47:49","date_gmt":"2019-08-26T06:47:49","guid":{"rendered":"https:\/\/www.jxscmachine.com\/?post_type=solutions&p=7413"},"modified":"2019-09-25T15:19:01","modified_gmt":"2019-09-25T07:19:01","slug":"traitement-du-sable-et-du-gravier","status":"publish","type":"solutions","link":"https:\/\/www.jxscmachine.com\/fr\/solutions\/sand-gravel-processing\/","title":{"rendered":"Sable et gravier"},"content":{"rendered":"
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\"sable<\/div>\n\t\t<\/figure>\n\t<\/div>\n
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Description<\/h2><\/div><\/div>\n\t
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Les d\u00e9p\u00f4ts de sable et de gravier que l'on trouve sur les plages ou dans les rivi\u00e8res et les ruisseaux sont principalement constitu\u00e9s de grains de quartz (dioxyde de silicium, SiO2). Ces grains de quartz sont form\u00e9s par l'alt\u00e9ration de roches telles que le granit. Au cours du processus d'alt\u00e9ration, les min\u00e9raux les plus tendres et les plus faibles du granit (tels que le feldspath) sont \u00e9limin\u00e9s par les intemp\u00e9ries. Le quartz, plus r\u00e9sistant, finit par \u00eatre r\u00e9duit en taille, mais ne se d\u00e9compose pas chimiquement. Avec le temps, ces grains de quartz s'accumulent dans les rivi\u00e8res, les ruisseaux, les deltas et sur les plages.<\/p>\n\n\t\t<\/div>\n\t<\/div>\n

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Relation avec l'exploitation mini\u00e8re<\/h2><\/div><\/div>\n\t
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Les m\u00e9thodes d'extraction du sable industriel d\u00e9pendent du type de gisement. Les gisements non consolid\u00e9s sont exploit\u00e9s \u00e0 l'aide de chargeurs frontaux, de d\u00e9capeuses ou de bulldozers. Les mat\u00e9riaux sont creus\u00e9s, excav\u00e9s et pouss\u00e9s vers un point central. Le mat\u00e9riau \u00e0 teneur en minerai est ensuite charg\u00e9 sur un camion \u00e0 l'aide d'un \u00e9quipement de terrassement standard, o\u00f9 il est ensuite achemin\u00e9 vers un stock ou une usine de traitement.<\/p>\n

Une drague hydraulique utilise un tuyau d'aspiration pour extraire le sable, qui est pomp\u00e9 dans un pipeline jusqu'\u00e0 des piles de d\u00e9versement ou directement jusqu'\u00e0 une usine de traitement. Le chenal ou le d\u00e9p\u00f4t de r\u00e9sidus est excav\u00e9 et plac\u00e9 dans une pile de stockage. Le mat\u00e9riau \u00e0 teneur en minerai est charg\u00e9 dans des camions pour \u00eatre transport\u00e9 vers une usine de traitement.<\/p>\n\n\t\t<\/div>\n\t<\/div>\n

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Utilisations<\/h2><\/div><\/div>\n\t
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Le sable et le gravier sont utilis\u00e9s pour la construction des routes, pour \u00eatre m\u00e9lang\u00e9s \u00e0 l'asphalte, comme remblai de construction et dans la production de mat\u00e9riaux de construction tels que les blocs de b\u00e9ton, les briques et les tuyaux. Ils sont \u00e9galement utilis\u00e9s pour fabriquer des bardeaux de toiture, sur les routes verglac\u00e9es en hiver, pour le ballast des voies ferr\u00e9es et pour la filtration de l'eau.<\/p>\n

Le sable et le gravier industriels sont utilis\u00e9s pour fabriquer du verre, comme sable de fonderie et comme sable abrasif.<\/p>\n

Pour certaines applications, c'est la teneur en silice (quartz) du sable qui le rend si pr\u00e9cieux. La silice elle-m\u00eame est n\u00e9cessaire pour fabriquer des produits tels que le verre. En outre, les propri\u00e9t\u00e9s physiques du sable, en particulier sa propri\u00e9t\u00e9 abrasive, le rendent utile pour la traction sur les routes verglac\u00e9es et les voies ferr\u00e9es, ainsi que pour le sablage.<\/p>\n\n\t\t<\/div>\n\t<\/div>\n

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Affaires connexes<\/h2><\/div><\/div><\/div><\/div><\/div><\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"Description Les d\u00e9p\u00f4ts de sable et de gravier que l'on trouve sur les plages ou dans les rivi\u00e8res et les ruisseaux sont principalement constitu\u00e9s de grains de quartz (dioxyde de silicium, SiO2). Ces grains de quartz sont form\u00e9s par l'alt\u00e9ration de roches telles que le granit. Au cours du processus d'alt\u00e9ration, les min\u00e9raux les plus tendres et les plus faibles du granit (tels que le feldspath) sont \u00e9limin\u00e9s par les intemp\u00e9ries. Le quartz, plus r\u00e9sistant, finit par \u00eatre broy\u00e9... Continuer la lecture de Sable et gravier<\/span><\/a>","protected":false},"author":1,"featured_media":7414,"parent":0,"menu_order":31,"comment_status":"open","ping_status":"open","template":"","format":"standard","meta":{"_acf_changed":false,"ngg_post_thumbnail":0,"footnotes":""},"class_list":["post-7413","solutions","type-solutions","status-publish","format-standard","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"\nSand and Gravel Processing | Equipment, Flow, Cases - JXSC<\/title>\n<meta name=\"description\" content=\"Sand and Gravel processing description from its geology mineral property to how to extract mineral from rock and placer deposit, related processing plant flow chart and layout design.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.jxscmachine.com\/fr\/solutions\/traitement-du-sable-et-du-gravier\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Sand and Gravel Processing | Equipment, Flow, Cases - 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